26900865449 has 2 divisors, whose sum is σ = 26900865450. Its totient is φ = 26900865448.

The previous prime is 26900865413. The next prime is 26900865457. The reversal of 26900865449 is 94456800962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19186405225 + 7714460224 = 138515^2 + 87832^2 .

It is a cyclic number.

It is not a de Polignac number, because 26900865449 - 2²⁴ = 26884088233 is a prime.

It is a super-3 number, since 3×26900865449³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26900865449.

It is not a weakly prime, because it can be changed into another prime (26900865049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13450432724 + 13450432725.

It is an arithmetic number, because the mean of its divisors is an integer number (13450432725).

Almost surely, 2^26900865449 is an apocalyptic number.

It is an amenable number.

26900865449 is a deficient number, since it is larger than the sum of its proper divisors (1).

26900865449 is an equidigital number, since it uses as much as digits as its factorization.

26900865449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3732480, while the sum is 53.

The spelling of 26900865449 in words is "twenty-six billion, nine hundred million, eight hundred sixty-five thousand, four hundred forty-nine".